ProTherm G XPS X 300 ULTRAInverted Roof Insulation has a Zero Ozone Depletion Potential (ODP), a Global Warming Potential (GWP) of less than 5. For use with Inverted Roof Waterproofing such as PermaQuik PQ6100, EshaFlex, EshaUniversal and ParaFlex. Use with ProTherm XENERGYMinK Water Flow Reducing Layer prior to the installation of paving, ballast, a green roof or timber decking.

For a comprehensive NBS J31 specification contact Radmat Building Products.

BS 476 Part 3: 2004– When ballasted with aggregate (minimum depth of 50 mm), or fully-supported cast stone or mineral slabs of at least 40 mm thickness, a roof construction incorporating ProTherm G XPS X 300 ULTRAmay be considered to be of designation EXT.F.AA (low vulnerability in Scotland) and as such is unrestricted by the National Building Regulations.

BS EN 13501-5:2016 ‘Euroclass A5’ – When ballasted with aggregate (minimum depth of 50 mm), or fully-supported cast stone or mineral slabs of at least 40 mm thickness, a roof construction incorporating ProTherm G XPS X 300 ULTRA may be considered to be of designation T4 and as such is unrestricted by the National Building Regulations.